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Question 2.12: Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate the threshold frequency (ν0) and work function (W0) of the metal. https://www.youtube.com/watch?v=g26ITvZzxEI&t=10s Question 2.12: Electrons…
Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the rate of emission of quanta per second. https://www.youtube.com/watch?v=i1KVhxl01OU&t=152s Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the…
Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize the sodium atom. Calculate the ionization energy of sodium in kJ mol–1. https://www.youtube.com/watch?v=fEErWcYZYYE Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to…
Question 2.9: A photon of wavelength 4 × 10–7 m strikes on the metal surface, the work function of the metal is 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the…